Buffing wheel



July 13, 1937. H. ZIMMERMA'N I BUFFING WHEEL Filed March 12, 1936 4Sheets-Sheet 1 lEl'LtEJI' 'r-iar g immggman w 1 H. ZIMMERMAN BUFFINGWHEEL July 13, 1937.

I Filed March 12, 1936 4 Sheets-Sheet 2 11111 511m? HELFIH zlmmer man 4Sheets-Sheet 3 lnuentur HaI'I'u 7immerman H. ZJIMMERMAN BUFFING WHEELFiled March 12, 1956 5 m W HHMM U July 13, 1937.

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BUFFING WHEEL Filed March 12, 1936 4 Sheets-Sheet 4 Iig- E F:: l5-

11w entclr Harru 7immerman Patented July 13, 1937 v UNITED STATES PATENTOFFICE BUFFING WHEEL Harry Zimmerman, Toronto, Ontario, CanadaApplication March 12, 1936, Serial No. 68,403

11 Claims.

10 tion is to provide a fan or similar draft creating element rotatablein conjunction with the buffing wheel for creating the air draft.-

Another and important object of my invention is, in cases where anaugmented air' draft through 15 the bufling wheel is required, tofurnish a fan eleng wheel whereby a ment at each side of the b currentof air is injected-i'ntobdth sides of the wheel. 1

A still further-object of my invention is to so design my ventilatingmeans that it can be incorporated in either sewn or loose ply buffs.

My invention consists in the provision of ventilated 'bufiing wheels,all as hereinafter more particularly described and illustrated in theaccompanying drawings, in which:-

Figure 1 is a front elevational view of a bumng wheel incorporating myinvention.

Figure 2 is a side elevational view of the wheel wheel, being takenthrough the line 33 Fig ure 2.

Figure 4 is an end elevational view of one of my bufiing wheel sectionsremoved from the supporting spindle and showing the ventilating orificestherein.

Figure 5 is a plan view of part of a bumng wheel section of the pleatedring type, wherein the inner edge of the ring is secured to itssupportin cdisc by a plurality of straight lines of stitching, asdescribed in my co-pending United States patent application Serial No.2,196.

Figure 6 is an edge elevational view of several ringplies of the typeshown in Figure 5.

Figure '7 is a plan view of a bufflng wheel ply of my circular pleatedring type.

Figure 8 is an enlarged side elevational view of a buffing wheel formedof loose plies, part of the wheel being broken away to disclose one ofthe ventilating passages extending therethrough, the fan positioned atone side of the wheel being shrouded in a screen cage to catch lint orother foreign matter that may be floating in the air and drawn into thefan.

Figures 9 and 10 are also enlarged cross-sectional views throughfragmentary portions of bufling wheels showing diiferent buff sectionand fan assemblies.

Figure 11 is also an enlarged plan view of a fragmentary portion of abufl section showing the provision of a small ply for thickening thesection at the central portion thereof.

Figure 12 is an end elevational view of a bufiing wheel, made upentirely of rings of fabric spaced away from their supporting spindle,and

' supported by fan end plates.

Figure 13 is a cross sectional view of the wheel shown in Figure 12,being taken through the line Iii-l3, Figure 12.

Figure 14 is an end elevational view of a bufling wheel of analternative construction, wherein the draft creatingfan elements areformed in the fabric plies;

Figure 15 is an enlarged cross sectional view through such alternativetype, being taken through the line li-i 5, Figure 14, and

- Figure 16 is a similar view to Figure 15, showing a slightly differentassembly form of the draft creating orifices.

Like characters of reference indicate the corresponding parts in thedifferent views in the drawings.

The buifing wheels illustrated in Figures 3, 9 and 10 of the drawingsare made up of sections in which the plies of material constituting eachsection are sewn together to make up what are known as hard or cuttingbufls.

In the bufl illustrated in Figure 8, the'bufiing portion of the pliesare not sewn together and this type of buff is generally known as aloose" or "coloring bufl.

The bufling wheels are provided with spindle receiving arbour holes I,andare adapted to be clamped upon the usual rotatable spindle 2 betweenclamping plates 3, which are drawn together by a nut 4 threaded upon theend of the spindle.

In my invention I provide eitherone or wo fans which are positioned uponthe spindle and abut the sides of the wheel. The fans of my preferredtype each consist of a hub 6, a plurality of fan blades I radiallyextending from'the hub and surrounded by a rim 8, which is principallyfurnished to confine the air drawn may be used as the clamping plates asillustrated in Figures 9 and it The sewn sections 9 making up thebufilng wheelillustrated in Figures 1 to 4, and the sewn sections itmaking up the major portion of the boiling wheels shown in Figures 9 and10 and also shown in Figure ii, are pierced with a plu rality oforifices I l soul-distantly disposed around the arbour holes i andsubstantially in align ment with the blade containing portions of thefans 5. The fan blades i are so inclined that the fans, in rotating withthe humus wheel, force currents of air into the passages 92 formed bythe aligned orifices it in the assembled sections of the wheel.

In order to permit the created air drafts in. the passages E2 to escapebetween the sections and ventilate the buiiing wheels for thedissipation of frictional heat, I form the central portions is of thesections between the orifices it and the arbour holes i of greaterthickness than the outer portions of the sections, so that such outerportions are spaced away from each other to form annular air passagesit. Upon rotation of the bufiing wheel, the air is forced into thepassages I2 and thrust outwardly between the sections through thepassages 13, as indicated by the arrows in the various figures.

The central portions of the sections can be thickened in any suitablemanner, as by the provision of the-small central plies It illustrated inFigure 11. These plies are preferably of slightly greater diameter thanthe diameter of the buif clamping members, i. e. the clamping plates 3or the fan hubs 6, as the case may be, and are also of a diametergreater than the distance between two diametrically opposite ventilatingorifices H, so that when the sections are clamped together the clampingaction does not have any tendency to press the outer thinner portions ofthe sections together and close the passages l3. In the buffing wheelshown in Fi ure 3, the plies are not individually thickened at theircentral portions, but are spaced apart by spacing rings 24 placedbetween the sections whereby the annular air passages are formed. Inorder that the thickening plies it do not block the passage of airthrough the orifices H, such plies are formed with the cut-away portionsl5 around the orifices. To retain the orifices II in the varioussections making up a buffing wheel in alignment to form the passages I2before and during the operation of clamping the bufling wheel upon thespindle, I secure the sections to gether in their proper arrangement bythe use of laces I I5 threaded through the assembled sections. To securepassages ll! of maximum area without weakening the centre of the bufiingwheel, I preferably form the orifices ll of pear shape as illustrated,though of'course, round orifices can be used.

In Figure 8 wherein a loose ply buff is illustrated, passage-ways l6similar to the passageways P2 are provided to extend through the pliesll of the section, and in this case where the plies are made up of plaindiscs, it is not necessary to thicken the buff at the centre as theloose plies will freely permit the passage of air therebetween.

Fig. 5 illustrates a ring ply 30 attached to a plain disc ply 3|, asdisclosed in my co-pending United States application Serial No. 2,196,and wherein the inner edge of the ring follows a plurality of straightlines. As described in my copending application, the pleats or the ringare distended at the corner portions 32, where the thickness of the ringply is reduced. By staggering the corners of a plurality of assembledring plies or sections as illustrated by dotted lines in Figure 5, andalso shown in Figure 6, the distended or reduced in thickness cornerpor= tlons, which in one ply or section overlap the thick non-distendedpleated portions in an adjacent ply or section, produce a free airventing construction,

' In Figure 7 I illustrate a pleated ring ply i8 attached to a plainply, as disclosed in my United States Patent No. 1,927,862, and as thepleating of the ring [18 at its inner periphery thickens the bud at thispoint,v it is not necessary to provide any extra thickening meam asbefore described, irrespective oi whether such pleated construc tion isused in loose or sewn sections. In this construction, the circular"ventilating orifices at out through the ring it at the thickest portionof the buff, and as the provision of the orifices would release thepleats at the orifice points beyond the lines of stitching 2i securingthe ring it to its disc 22, I furnish a second ring oi. stitching 23around the outside of the orifices, thus firmly securing the ring inplace at the orifice points and preventing the outwardly passing airdraft from billowing the pleats at the orifice points. In the sewnsections, such as illustrated in Figure 41, I also sew the plies withlines of stitching 25 around the orifices ii to draw the plies tightlytogether, as billowing of the outer plies of the sections mightconceivably increase the sections in thickness at the orifice points andreduce the free venting of air through the passages l3.

In cases where there is a possibility of lint or other foreign matterfloating in the air of the room where the buffing operation is takingplace, I can either cover the a r orifices of the fans with a wirescreen 26 to catch any foreign matter entering the fan, as illustratedin Figure 10, or in cases where it is found that the screen becomesrapidly clogged, I can, as illustrated in Figure 8, surround the entirefan in a stationary wire screen cage 21, whereby a larger screen area isafforded.

Upon reference to Figures 8 and 9, it will be seen that only one fan isused and in these instances the section 21 or plies 28 at the other endof the wheel to the fan, are unpierced so that the ends of the air draftpassage-ways are closed and the air only escapes between the sections orplies as the case may be. In Figure 10 I illustrate a buffing wheelprovided with two fans. but wherein the central section 229 is unpiercedso that the air drafts do not meet. The central section is cooled byboth air drafts, as indicated by the arrows.

While the hub 6 of the fan is used either in conjunction with or inplace of the clamping plate 3 and is drawn tightly a ainst the bufiingwheel, it is essential that the blade rim 8, while it may be in closeproximity to or abut the end face of the wheel, must not squeeze thesections or plies of the wheel together, as any squeezing action wouldtend to close the annular air draft passages and defeat the purpose ofmy invention. The fan can be made from a stifi material such as metal,wood or composition, or can be molded from either hard or soft rubber.In cases where the fan is made from a stiff material, the inner edge ofthe blade rim 8 may be formed to carry a lip of soft rubber which wouldengage the face of the bufling wheel and prevent the escape of the airdraft without any squeezing action of the wheel at this point.

Figures 12 and 13 illustrate the application of my invention to a wheelwherein the bufling plies 33 are in the form of rings surrounding andspaced apart from the spindle 2. In this case, the fans are incorporatedin the bufiing ring supporting metal discs 34, which are clamped uponthe spindle by the usual nut 4. Draw bolts I24 clamp the buifing ringsbetween the discs. The discs are pierced with orifices 35 formed withinclined lips 36 to constitute vanes which force an air draft into thecentral passage 42 and out between the bufiing sections or plies, asindicated by the arrows.

An alternative construction for a forced draft ventilated buffing wheelis shown in Figures 14 and 15, wherein the wheel 31 or sections 38making up the wheel, are pierced with orifices 39 inclined in respect totheir plane of rotation, so that the walls 40 of the orifices constitutevanes, and in the rotation of the wheel, as indicated by the arrows A,pick up air and force an air draft, as indicated by the other arrows,between the' sections or plies as the case may be. Figure 16 is asimilar section to that illustrated in Figure 15, and wherein theorifices 43 are similarly disposed to the orifices 39. The orifices 43are not each inclined, but are staggered in relation to one another.

What I claim as my invention is:-

1. In a bufilng wheel, a plurality of plies of m'aterial mounted side byside and wherein some of the adjacent plies are so positioned inrelation to each other that an air draft can pass therebetween, saidadjacent plies being pierced with air circulating orifices, and fanmeans rotatable in conjunction with the buffing wheel to create a forceddraft through the orifices and between the plies for the purposespecified.

2. A bufiing wheel including a plurality of buffing wheel sectionsmounted side by side to form a wheel and so positioned in relation toeach other that an air draft can pass therebetween, and fan meansrotatable in conjunction with the buffing wheel for creating a forceddraft'between the plies for the purpose specified.

3. A bufiing wheel including a plurality of buffing wheel sectionsmounted side by side to form a wheel and so positioned in relation toeach other that an air draft can pass therebetween,

-said sections being pierced with air circulating orifices, and fanmeans rotatable in conjunction with the buffing wheel to create a forceddraft through the orifices and between the plies for the purposespecified.

4. In a bufflng wheel, a plurality of plies of material mounted side byside and wherein some of the adjacent plies are so positioned inrelation to each other that an air draft can pass therebetween, saidadjacent plies being pierced with air circulating orifices and means forcreating a forced draft through the orifices and between the plies forthe purpose specified.

5. In a buffing wheel, a plurality of plies of material mounted side byside and wherein some of the adjacent plies are so positioned inrelation to each other that an air draft can pass therebetween, saidplies having anair passage extending through their central portions andcommunicating with the air draft passages between the plies, and fanmeans rotatable in conjunction with the bufiing wheel to create a forceddraft through the passage and between the plies for the purposespecified.

6. A bufiing wheel including a plurality of sections, a plurality offabric plies in each section and the outer portions of which constitutethe working portion of the wheel, means for arranging some of said pliesso that an air draft can pass therebetween, a plurality of orificespiercing the sections and arranged around the arbour holes to form airpassages through the wheel which communicate with the air draft passagesbetween the plies, means inserted between the central portions of thesections for spacing the pierced portions of the sections apart, and'fan means rotatable in conjunction with the bufling wheel to create aforced draft through the passages and between. the plies for thepurother that an air draft can pass therebetween,

and a fan mounted beside the buffing wheel and rotatable therewith forcreating a forced draft between the plies for the purpose specified.

8. In a bufiing wheel, a plurality of plies of material mounted side byside and wherein some of the adjacent plies are so positioned inrelation to each other that an air draft can pass therebetween, saidplies having an air passage extending through their central portions andcommunicating with the air draft passages between the piles, and a pairof fans mounted concentrically with the buffing wheel at either sidethereof and rotatable therewith for creating an air draft between theplies for the purpose specified.

9. In a buffing wheel, a plurality of plies of material mounted side byside and wherein some of the plies are in the form of gathered rings andso positioned in relation to adjacent plies that an air draft can passtherebetween to the periphery of the wheel, said plurality of pliesincluding 'plies having an air passage extending through their centralportions and communicating with the air draft passages extending to theperiphery of the wheel, and fan means rotatable in conjunction with thebuffing wheel to create a forced draft through the passage and betweenthe plies for the purpose specified.

10. In a bufilng wheel, a plurality of plies of material mounted side byside and wherein some of the plies are in the form of gathered rings andso positioned in relation to adjacent plies that an air draft can passtherebetween to the periphery of the wheel, said plurality of pliesincluding plies having an air passage extending through their centralportions and communicating withthe air draft passages extending to theperiphery of the wheel, and a fan mounted concentrically with thebufiingwheel and rotatable therewith for creating a forced draft between theplies for the purpose specified.

11. In a buffing wheel, a plurality of plies of material mounted side byside, and wherein some of the adjacent plies are so positioned inrelation to each other that an air draft can pass therebetween, apassage extending inwardly into the wheel from one side thereof, andforced air draft creating means positioned exteriorly of the wheel forcreating a forced air draft in the passage for the purpose specified.

. HAR RY ZIMMZERMAN.

